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Delay and Doppler Spreads of Nonstationary Vehicular Channels for Safety-Relevant Scenarios
Open accessAbstract
Vehicular communication channels are characterized by a nonstationary time-frequency-selective fading process due to rapid changes in the environment. The nonstationary fading process can be characterized by assuming local stationarity for a region with finite extent in time and frequency. For this finite region, the wide-sense stationarity and uncorrelated scattering assumption approximately holds, and we are able to calculate a time-frequency-dependent local scattering function (LSF). In this paper, we estimate the LSF from a large set of measurements collected in the DRIVEWAY'09 measurement campaign, which focuses on scenarios for intelligent transportation systems (ITSs). We then obtain the time-frequency-varying power delay profile (PDP) and the time-frequency-varying Doppler power spectral density (DSD) from the LSF. Based on the PDP and the DSD, we analyze the time-frequency-varying root-mean-square (RMS) delay spread and the RMS Doppler spread. We show that the distribution of these channel parameters follows a bimodal Gaussian mixture distribution. High RMS delay spread values are observed in situations with rich scattering, whereas high RMS Doppler spreads are obtained in drive-by scenarios.
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McLachlan, G., & Peel, D. (2000) · Wiley Series in Probability and Statistics · doi:10.1002/0471721182 · Cited by 10,991
The Kolmogorov-Smirnov Test for Goodness of Fit
Massey, F. J. (1951) · Journal of the American Statistical Association · doi:10.1080/01621459.1951.10500769 · Cited by 7,210
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Vehicular Communications: A Physical Layer Perspective
Liang, L., Peng, H., Li, G. Y., & Shen, X. (2017) · IEEE Transactions on Vehicular Technology · doi:10.1109/tvt.2017.2750903 · Cited by 267
A Pseudo Maximum likelihood approach to position estimation in dynamic multipath environments
Fascista, A., Coluccia, A., & Ricci, G. (2021) · Signal Processing · doi:10.1016/j.sigpro.2020.107907 · Cited by 38
Metadata
- Authors
- Bernadó, L., Zemen, T., Tufvesson, F., Molisch, A. F., & Mecklenbräuker, C. F.
- Venue
- IEEE Transactions on Vehicular Technology
- Published
- 2014-01
- Volume
- 63
- Issue
- 1
- Pages
- 82-93
- ISSN
- 0018-9545 (ISSN-L)
- 1939-9359
- OpenAlex
- W2086642708
- Cited by
- 202
- References
- 2
- FWCI
- 8.19
- Type
- journal article
- Language
- en
- Open access
- green
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- Bernadó, L., Zemen, T., Tufvesson, F., Molisch, A. F., & Mecklenbräuker, C. F. (2014). Delay and Doppler Spreads of Nonstationary Vehicular Channels for Safety-Relevant Scenarios. IEEE Transactions on Vehicular Technology. https://doi.org/10.1109/tvt.2013.2271956
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